/* Field Stack Robotics: turquoise + white on top of the PyData Sphinx Theme.
   Change the colors here to restyle the whole site (light and dark mode). */
html[data-theme="light"] {
  /* Taken from the lighthouse logo: tower teal and deep teal */
  --pst-color-primary: #0f766e;            /* links, active menu items */
  --pst-color-primary-highlight: #0b3b38;
  --pst-color-secondary: #0f766e;          /* hover, secondary accents ("Back to top" button) */
  --pst-color-secondary-highlight: #0b3b38;
  --pst-color-link: #0f766e;
  --pst-color-link-hover: #0b3b38;
  --pst-color-inline-code: #0c5f59;
  --pst-color-text-base: #1c2b2a;
  --pst-color-text-muted: #4f6462;
  --pst-color-heading: #0b3b38;
  --pst-color-border: #d5e4e1;
  --pst-color-background: #ffffff;
  --pst-color-on-background: #ffffff;
  --pst-color-surface: #f3f8f7;
  --rln-note-bg: #e4f0ee;
}
html[data-theme="dark"] {
  --pst-color-primary: #3fd2c7;
  --pst-color-primary-highlight: #6fe0d7;
  --pst-color-secondary: #2bb8ae;
  --pst-color-secondary-highlight: #3fd2c7;
  --pst-color-link: #3fd2c7;
  --pst-color-link-hover: #6fe0d7;
  --pst-color-inline-code: #6fe0d7;
  --pst-color-background: #0f1a1b;
  --pst-color-on-background: #132223;
  --pst-color-surface: #162728;
  --rln-note-bg: #163a39;
}

/* Note boxes: same tint as the left sidebar */
.admonition.note, div.admonition.note { border-color: var(--pst-color-primary); background-color: var(--rln-sidebar-bg); }
.admonition.note > .admonition-title { background-color: var(--rln-sidebar-current) !important; }
.admonition.note > .admonition-title::after, .admonition.note > .admonition-title::before { color: var(--pst-color-primary); }

/* Email signup box */
.signup { border: 1px solid var(--pst-color-border); border-radius: 6px; background: var(--rln-sidebar-bg); padding: 16px 18px; margin: 28px 0 8px; }
.signup strong { display: block; font-size: 1.05rem; margin-bottom: 8px; }
.signup form { display: flex; flex-wrap: wrap; gap: 8px; }
.signup input[type="email"] { flex: 1 1 220px; padding: 6px 10px; border: 1px solid var(--pst-color-border); border-radius: 4px; background: var(--pst-color-background); color: var(--pst-color-text-base); }
.signup button { background: var(--pst-color-primary); color: var(--pst-color-background); border: 0; border-radius: 4px; padding: 6px 16px; font-weight: 600; cursor: pointer; }
.signup p { margin: 8px 0 0; font-size: 0.9rem; color: var(--pst-color-text-muted); }
/* Kit form inside the box: no own background/padding, teal button (Kit sets inline styles, hence !important) */
.signup .formkit-form { background: transparent !important; max-width: none !important; border: 0 !important; }
.signup .formkit-form [data-style="clean"] { padding: 0 !important; }
.signup .formkit-input { border-color: var(--pst-color-border) !important; background: var(--pst-color-background) !important; color: var(--pst-color-text-base) !important; border-radius: 4px !important; }
.signup .formkit-submit { background-color: var(--pst-color-primary) !important; color: var(--pst-color-background) !important; border-radius: 4px !important; font-weight: 600 !important; }
.signup .formkit-powered-by-convertkit-container { margin: 8px 0 0 !important; }

/* Home page cards, like Jupyter's "More information" grid */
.sd-card { background: var(--rln-sidebar-bg); border-color: var(--pst-color-border); transition: border-color 0.15s, box-shadow 0.15s; }
.sd-card:hover { border-color: var(--pst-color-primary); box-shadow: 0 2px 10px rgba(15, 118, 110, 0.15); }
.sd-card .sd-card-title { color: var(--pst-color-primary); font-weight: 600; }
.navbar-brand img { height: 32px; }

/* ---------- Font: Inter everywhere, bold headings ---------- */
html { --pst-font-family-base: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
       --pst-font-family-heading: var(--pst-font-family-base); }
h1, h2, h3 { font-weight: 700; letter-spacing: -0.01em; }
html[data-theme="light"] { --rln-header-bg: #ffffff; --rln-header-fg: #0b3b38; --rln-header-muted: rgba(11, 59, 56, 0.72); --rln-header-hover: rgba(15, 118, 110, 0.08); --rln-sidebar-bg: #e4f0ee; --rln-sidebar-current: #cbe3df; --rln-card-bg: #e4f0ee; }
html[data-theme="dark"]  { --rln-header-bg: #12181a; --rln-header-fg: #ffffff; --rln-header-muted: rgba(255, 255, 255, 0.75); --rln-header-hover: rgba(255, 255, 255, 0.1); --rln-sidebar-bg: #15302e; --rln-sidebar-current: #1d4542; --rln-card-bg: #163a39; }

/* ---------- Top bar: white (light) / near-black (dark), so the lighthouse logo stands out ---------- */
.bd-header { background: var(--rln-header-bg) !important; border-bottom: 1px solid var(--pst-color-border); box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12); }
.bd-header .bd-header__inner { max-width: 100%; padding-left: 1.5rem; padding-right: 1.5rem; }   /* logo at the left edge */
.bd-header .navbar-brand img { height: 52px; }
.bd-header .navbar-header-items__start { margin-right: 1.5rem; }
/* Section links: light, thin and evenly spaced; the current one is plain white */
.bd-header .navbar-nav { gap: 0.4rem; }
.bd-header .navbar-nav .nav-link,
.bd-header .navbar-nav .dropdown-toggle { color: var(--rln-header-muted) !important; font-weight: 400; font-size: 0.95rem; }
.bd-header .navbar-nav .nav-link:hover,
.bd-header .navbar-nav .current .nav-link,
.bd-header .navbar-nav .active .nav-link { color: var(--rln-header-fg) !important; }
.bd-header ul.navbar-nav > li.nav-item > .nav-link::before,
.bd-header ul.navbar-nav > li.nav-item.current > .nav-link::before { display: none; border: 0; }   /* no underline under the current section */
.bd-header .navbar-nav .current .nav-link { box-shadow: none; font-weight: 500; }
.bd-header .navbar-header-items__end .nav-link,
.bd-header .navbar-header-items__end i,
.bd-header .theme-switch-button span,
.bd-header .bd-header__inner button { color: var(--rln-header-fg) !important; }

/* ---------- Left sidebar: own background, a line between it and the page ---------- */
.bd-container .bd-page-width, .bd-container__inner { max-width: 100%; }   /* sidebar reaches the left edge */
.bd-main .bd-content { justify-content: flex-start; }   /* page text starts right next to the left sidebar */
.bd-main .bd-content .bd-article-container { margin-left: 0; }
.bd-sidebar-primary .bd-search .search-button__kbd-shortcut { display: none; }
.bd-sidebar-primary { flex: 0 0 16rem; max-width: 16rem; background: var(--rln-sidebar-bg);
  border-right: 1px solid var(--pst-color-border); padding: 1.2rem 0.9rem; font-size: 0.88rem;
  scrollbar-width: thin; scrollbar-color: transparent transparent; }
.bd-sidebar-primary:hover { scrollbar-color: var(--pst-color-border) transparent; }
.bd-sidebar-primary .bd-search { border-radius: 8px; background: var(--pst-color-background); margin-bottom: 1rem; }
.bd-sidebar-primary nav.bd-links p.bd-links__title { display: none; }
.bd-sidebar-primary nav.bd-links li > a { padding: 0.28rem 0.6rem; border-radius: 6px; color: var(--pst-color-text-muted); font-weight: 400; }
.bd-sidebar-primary nav.bd-links li > a:hover { color: var(--pst-color-primary); background: none; text-decoration: none; }
.bd-sidebar-primary nav.bd-links .toctree-l1 > a { color: var(--pst-color-text-base); font-weight: 500; margin-top: 0.3rem; }
.bd-sidebar-primary nav.bd-links ul ul { padding-left: 0.7rem; }
.bd-sidebar-primary nav.bd-links li > a.current,
.bd-sidebar-primary nav.bd-links .current > a { color: var(--pst-color-primary); font-weight: 600; box-shadow: none; border: 0; background: none; }
.bd-sidebar-primary nav.bd-links li > a.current { background: var(--rln-sidebar-current); }
html[data-theme="light"] .bd-sidebar-primary nav.bd-links li > a.current { color: var(--pst-color-primary-highlight); }   /* darker text so it reads well on the highlight */

/* ---------- Right sidebar: card on top, quiet "On this page" ---------- */
.bd-sidebar-secondary { font-size: 0.85rem; }
/* Line left of the card sits about halfway between the page text and the card */
@media (min-width: 1200px) {
  .bd-sidebar-secondary { --rln-line-gap: clamp(1rem, 4.5vw, 5.5rem); width: calc(17rem + var(--rln-line-gap) - 1rem); margin-left: auto; margin-right: clamp(1.5rem, 8vw, 10rem); }   /* toward the right, with some room on wide screens */
  .bd-sidebar-secondary .sidebar-secondary-item { padding-left: var(--rln-line-gap); }
}
.bd-sidebar-secondary .onthispage { font-size: 0.85rem; font-weight: 600; }
.bd-sidebar-secondary nav.page-toc a { color: var(--pst-color-text-muted); padding-top: 0.2rem; padding-bottom: 0.2rem; }
.bd-sidebar-secondary nav.page-toc a:hover { color: var(--pst-color-primary); }
.rln-card { background: var(--rln-card-bg); border: 1px solid var(--pst-color-primary); border-radius: 12px;
  padding: 1rem 1.1rem 1.2rem; margin-bottom: 1.5rem; text-align: center; }
.rln-card__title { font-weight: 700; font-size: 1rem; margin: 0 0 0.3rem; text-align: left; color: var(--pst-color-text-base); }
.rln-card__text { font-size: 0.85rem; margin: 0 0 0.8rem; text-align: left; color: var(--pst-color-text-muted); }
.rln-card__art { width: 96px; color: var(--pst-color-primary); margin: 0.2rem auto 0.9rem; display: block; }
.rln-card__button { display: inline-block; background: var(--pst-color-primary); color: var(--pst-color-background) !important;
  font-weight: 600; padding: 0.45rem 1.2rem; border-radius: 6px; text-decoration: none !important; }
.rln-card__button:hover { filter: brightness(1.1); }

/* ---------- GitHub box in the top bar ---------- */
.rln-gh { display: flex; align-items: center; gap: 0.6rem; margin: 0 0.8rem; padding: 0.3rem 0.8rem 0.3rem 0.4rem;
  border-radius: 10px; color: var(--rln-header-fg) !important; text-decoration: none !important; line-height: 1.2;
  transition: background 0.15s; }
.rln-gh:hover { background: var(--rln-header-hover); }
.rln-gh__icon { display: grid; place-items: center; width: 2.1rem; height: 2.1rem; font-size: 1.75rem; transition: transform 0.2s; }
.rln-gh:hover .rln-gh__icon { transform: rotate(-8deg) scale(1.08); }
.rln-gh__text { display: flex; flex-direction: column; gap: 0.15rem; }
.rln-gh__name { font-size: 0.85rem; font-weight: 500; letter-spacing: 0.01em; }
.rln-gh__facts { display: flex; gap: 0.8rem; font-size: 0.75rem; color: var(--rln-header-muted); }
.rln-gh__fact { display: inline-flex; align-items: center; gap: 0.3rem; }
.rln-gh__fact[hidden] { display: none; }
.rln-gh__fact i { font-size: 0.7rem; }
.rln-gh__fact b { font-weight: 500; }
@media (max-width: 1560px) { .rln-gh__text { display: none; } }   /* only the icon, so the section links stay on one line */
/* Section links never wrap; they get tighter on narrower screens */
.bd-header .navbar-nav .nav-link, .bd-header .navbar-nav .dropdown-toggle { white-space: nowrap; }
@media (max-width: 1400px) {
  .bd-header .navbar-nav { gap: 0; }
  .bd-header .navbar-nav .nav-link, .bd-header .navbar-nav .dropdown-toggle { font-size: 0.85rem !important; }
  .bd-header .navbar-header-items__start { margin-right: 0.5rem; }
}
/* No room for them below this width; the left sidebar lists every section anyway */
@media (max-width: 1199.98px) { .bd-header .navbar-header-items__center { display: none; } }

/* ---------- IMU widget: animated compass and horizon on the home page ---------- */
.rln-imu { border: 1px solid var(--pst-color-border); border-radius: 10px; background: var(--rln-sidebar-bg); padding: 18px 20px 12px; margin: 24px 0 8px; }
.rln-imu__instruments { display: flex; flex-wrap: wrap; justify-content: center; gap: 20px 120px; }   /* 120px: space between the dials */
.rln-imu__instrument { flex: 0 1 150px; min-width: 130px; display: flex; flex-direction: column; align-items: center; }   /* 150px: dial size */
.rln-imu__instrument svg { display: block; width: 100%; height: auto; }
.rln-imu__readout { display: inline-flex; align-items: baseline; gap: 8px; margin-top: 10px; padding: 4px 12px; border: 1px solid var(--pst-color-border); border-radius: 6px; background: var(--pst-color-background); white-space: nowrap; }
.rln-imu__readout span { font-size: 0.68rem; font-weight: 600; letter-spacing: 0.06em; text-transform: uppercase; color: var(--pst-color-text-muted); }
.rln-imu__readout strong { font-size: 0.95rem; font-variant-numeric: tabular-nums; color: var(--pst-color-text-base); }
.rln-imu__caption { margin: 12px 0 0; font-size: 0.85rem; text-align: center; color: var(--pst-color-text-muted); }
.rln-imu__dial { fill: var(--pst-color-background); stroke: var(--pst-color-border); stroke-width: 2; }
.rln-imu__tick { stroke: var(--pst-color-text-muted); stroke-width: 1.2; }
.rln-imu__tick--major { stroke: var(--pst-color-text-base); stroke-width: 2.4; }
.rln-imu__label { fill: var(--pst-color-text-base); font-size: 13px; font-weight: 700; text-anchor: middle; dominant-baseline: central; }
.rln-imu__pointer { fill: var(--pst-color-primary); }
.rln-imu__robot { fill: var(--pst-color-background); stroke: var(--pst-color-text-base); stroke-width: 4; }
.rln-imu__wheel { fill: var(--pst-color-text-base); }
.rln-imu__sky { fill: #8fdcd6; }
.rln-imu__ground { fill: #0f766e; }
.rln-imu__ladder { stroke: #ffffff; stroke-width: 1.6; }
.rln-imu__ladder--zero { stroke-width: 2.4; }
.rln-imu__ladder-text { fill: #ffffff; font-size: 11px; font-weight: 600; text-anchor: middle; dominant-baseline: central; }
.rln-imu__symbol { fill: none; stroke: #16302f; stroke-width: 4.5; stroke-linecap: round; stroke-linejoin: round; }
.rln-imu__bezel { fill: none; stroke: var(--pst-color-border); stroke-width: 2; }

/* ---------- Charts (heading-chart.js) ---------- */
/* Series colors: checked for color-blind readers in both modes (teal = gyro, violet = wheels) */
html[data-theme="light"] .rln-chart { --rln-series-gyro: #00897b; --rln-series-wheel: #6250d6; }
html[data-theme="dark"]  .rln-chart { --rln-series-gyro: #1fa89e; --rln-series-wheel: #9085e9; }
.rln-chart { border: 1px solid var(--pst-color-border); border-radius: 10px; background: var(--pst-color-background); padding: 16px 18px 12px; margin: 20px 0; }
.rln-chart__title { margin: 0; font-weight: 600; color: var(--pst-color-text-base); }
.rln-chart__caption { margin: 2px 0 10px; font-size: 0.85rem; color: var(--pst-color-text-muted); }
.rln-chart__legend { display: flex; gap: 18px; font-size: 0.85rem; color: var(--pst-color-text-base); margin-bottom: 4px; }
.rln-chart__legend-item { display: inline-flex; align-items: center; gap: 6px; }
.rln-chart__plot { position: relative; }
.rln-chart__plot svg { display: block; width: 100%; height: auto; overflow: visible; }
.rln-chart__grid { stroke: var(--pst-color-border); stroke-width: 1; }
.rln-chart__axis { stroke: var(--pst-color-text-muted); stroke-width: 1; }
.rln-chart__tick { fill: var(--pst-color-text-muted); font-size: 12px; }
.rln-chart__direct { fill: var(--pst-color-text-base); font-size: 12px; font-weight: 600; }
.rln-chart__line { fill: none; stroke-width: 2; stroke-linecap: round; stroke-linejoin: round; }
.rln-chart__line--gyro { stroke: var(--rln-series-gyro); }
.rln-chart__line--wheel { stroke: var(--rln-series-wheel); }
.rln-chart__dot { stroke: var(--pst-color-background); stroke-width: 2; }
.rln-chart__dot.rln-chart__line--gyro { fill: var(--rln-series-gyro); }
.rln-chart__dot.rln-chart__line--wheel { fill: var(--rln-series-wheel); }
.rln-chart__cross { stroke: var(--pst-color-text-muted); stroke-width: 1; stroke-dasharray: 3 3; }
.rln-chart rect:focus { outline: none; }
.rln-chart rect:focus-visible { outline: 2px solid var(--pst-color-primary); }
.rln-chart__tip { position: absolute; top: 8px; pointer-events: none; min-width: 120px; padding: 8px 10px; border: 1px solid var(--pst-color-border); border-radius: 8px; background: var(--pst-color-background); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12); font-size: 0.8rem; }
.rln-chart__tip-time { color: var(--pst-color-text-muted); margin-bottom: 4px; font-variant-numeric: tabular-nums; }
.rln-chart__tip-row { display: flex; align-items: center; gap: 6px; color: var(--pst-color-text-muted); }
.rln-chart__tip-row strong { color: var(--pst-color-text-base); font-variant-numeric: tabular-nums; min-width: 3.2em; }
.rln-chart__table { margin-top: 8px; font-size: 0.85rem; }
.rln-chart__table summary { cursor: pointer; color: var(--pst-color-link); }
.rln-chart__table table { margin: 8px 0 0; font-variant-numeric: tabular-nums; }
.rln-chart__table th, .rln-chart__table td { padding: 3px 18px 3px 0; text-align: right; }
.rln-chart__table th:first-child, .rln-chart__table td:first-child { text-align: left; }

/* ---------- Diagrams (inline SVG in the pages) ---------- */
/* Same colors as the charts: violet = what the wheels say, teal = what really happened */
html[data-theme="light"] .rln-diagram { --rln-series-gyro: #00897b; --rln-series-wheel: #6250d6; }
html[data-theme="dark"]  .rln-diagram { --rln-series-gyro: #1fa89e; --rln-series-wheel: #9085e9; }
.rln-diagram { border: 1px solid var(--pst-color-border); border-radius: 10px; background: var(--pst-color-background); padding: 14px 18px 12px; margin: 20px 0; }
.rln-diagram svg { display: block; width: 100%; height: auto; }
.rln-diagram figcaption { margin-top: 6px; font-size: 0.85rem; text-align: center; color: var(--pst-color-text-muted); }
.rln-diagram__title { fill: var(--pst-color-text-base); font-size: 14px; font-weight: 600; }
.rln-diagram__label { fill: var(--pst-color-text-base); font-size: 13px; }
.rln-diagram__value { fill: var(--pst-color-text-base); font-size: 14px; font-weight: 700; }
.rln-diagram__note { fill: var(--pst-color-text-muted); font-size: 12px; }
.rln-diagram line, .rln-diagram__arc { fill: none; stroke-width: 2.5; stroke-linecap: round; }
.rln-diagram__line--wheel { stroke: var(--rln-series-wheel); }
.rln-diagram__line--real { stroke: var(--rln-series-gyro); }
.rln-diagram__dashed { stroke-dasharray: 7 6; }
.rln-diagram__arc { stroke-width: 2; }
.rln-diagram__start { stroke: var(--pst-color-text-muted); stroke-width: 1.5; stroke-dasharray: 3 4; }
.rln-diagram__gap { stroke: var(--pst-color-text-muted); stroke-width: 1.5; }
.rln-diagram__divider { stroke: var(--pst-color-border); stroke-width: 1; }
.rln-diagram__robot { fill: var(--pst-color-background); stroke: var(--pst-color-text-base); stroke-width: 2.5; }
.rln-diagram__fill--wheel { fill: var(--rln-series-wheel); }
.rln-diagram__fill--real { fill: var(--rln-series-gyro); }
.rln-diagram__fill--muted { fill: var(--pst-color-text-muted); }

/* ======================================================================
   Robots page (robots/index.md) and the home page teaser strip.
   Blur levels: rb-veil--1 (peek) .. rb-veil--3 (heavy). Remove the class to reveal a model.
   ====================================================================== */
html[data-theme="light"] { --rb-ink: #0b3b38; --rb-body: #ffffff; --rb-panel: #a9bfbc; --rb-dark: #1f3b3a; --rb-art-bg: #eef5f4;
  --rb-accent: #f0712c; --rb-water: #d6ebf5; --rb-wave: #3b82c4; --rb-badge-bg: #e4ece9; --rb-badge-fg: #1f3b3a; }
html[data-theme="dark"]  { --rb-ink: #cfe9e6; --rb-body: #1d3433; --rb-panel: #4f6c69; --rb-dark: #0b1414; --rb-art-bg: #132324;
  --rb-accent: #ff8a4c; --rb-water: #12303f; --rb-wave: #5aa7e6; --rb-badge-bg: #1d3433; --rb-badge-fg: #cfe9e6; }

.rb-hero { margin: -0.4rem 0 1.6rem; }
.rb-hero__eyebrow { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.28em; text-transform: uppercase; color: var(--pst-color-primary); margin: 0 0 0.3rem; }
.rb-hero__lead { font-size: 1.15rem; line-height: 1.55; color: var(--pst-color-text-muted); max-width: 46rem; margin: 0; }

.bd-main .bd-content .bd-article-container:has(.rb-grid) { max-width: 82rem; }   /* robots page: use the full width */
.bd-article-container:has(.rb-grid) section > p, .rb-waitlist { max-width: 50rem; }   /* keep text lines readable on the wide page */
.rb-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1.1rem; margin: 0 0 1rem; }
@media (max-width: 1280px) { .rb-grid { grid-template-columns: repeat(2, 1fr); } }   /* 2 x 2, never 3 + 1 */
@media (max-width: 640px)  { .rb-grid { grid-template-columns: 1fr; } }
.rb-card { display: flex; flex-direction: column; background: var(--pst-color-background); border: 1px solid var(--pst-color-border);
  border-radius: 14px; padding: 1.2rem 1.2rem 1.1rem; transition: transform 0.2s, box-shadow 0.2s, border-color 0.2s; }
.rb-card:hover { transform: translateY(-3px); border-color: var(--pst-color-primary); box-shadow: 0 10px 28px rgba(15, 118, 110, 0.14); }
.rb-card--now { border-color: var(--pst-color-primary); box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.08); }
.rb-card--branch { border-style: dashed; }
.rb-card__top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 0.9rem; }
.rb-card__num { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 2.3rem; font-weight: 700; line-height: 1; color: var(--rb-accent); }

.rb-badge { display: inline-flex; align-items: center; gap: 0.4rem; font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.68rem; font-weight: 700; letter-spacing: 0.14em; text-transform: uppercase; padding: 0.3rem 0.7rem;
  border-radius: 999px; white-space: nowrap; background: var(--rb-badge-bg); color: var(--rb-badge-fg); }
.rb-badge--now { background: var(--rb-dark); color: #fff; }
html[data-theme="dark"] .rb-badge--now { background: var(--pst-color-primary); color: #0f1a1b; }
.rb-badge--outline { background: transparent; border: 1.5px solid var(--rb-badge-fg); }
.rb-badge--inline { margin: 0 0 1rem; }
.rb-pulse { width: 7px; height: 7px; border-radius: 50%; background: #34d399; box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.7); animation: rb-pulse 1.8s infinite; }
@keyframes rb-pulse { 70% { box-shadow: 0 0 0 7px rgba(52, 211, 153, 0); } 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); } }

/* Illustration box */
.rb-art { position: relative; overflow: hidden; border-radius: 10px; background: var(--rb-art-bg); aspect-ratio: 16 / 10; margin-bottom: 1rem; }
.rb-art svg { display: block; width: 100%; height: 100%; }
.rb-art--water { background: linear-gradient(var(--rb-art-bg) 68%, var(--rb-water) 68%); }
.rb-art .rb-body  { fill: var(--rb-body); stroke: var(--rb-ink); stroke-width: 3; stroke-linejoin: round; }
.rb-art .rb-panel { fill: var(--rb-panel); }
.rb-art .rb-dark  { fill: var(--rb-dark); }
.rb-art .rb-accent { fill: var(--rb-accent); }
.rb-art .rb-board { fill: #2f7d5b; stroke: var(--rb-ink); stroke-width: 2; }
.rb-art .rb-chip  { fill: var(--rb-dark); }
.rb-art .rb-line  { stroke: var(--rb-ink); stroke-width: 3; }
.rb-art .rb-thin  { stroke: var(--rb-panel); stroke-width: 2; }
.rb-art .rb-floor { fill: none; stroke: var(--rb-panel); stroke-width: 2; stroke-dasharray: 6 5; }
.rb-art .rb-floor--wavy { stroke-dasharray: none; }
.rb-art .rb-scan  { fill: none; stroke: var(--rb-accent); stroke-width: 2; stroke-dasharray: 4 4; animation: rb-scan 2.4s ease-in-out infinite; }
.rb-art .rb-scan + .rb-scan { animation-delay: 0.3s; }
@keyframes rb-scan { 0%, 100% { opacity: 0.25; } 50% { opacity: 1; } }
.rb-art .rb-wheel { fill: #3d4a63; stroke: var(--rb-ink); stroke-width: 3; }
.rb-art .rb-tire  { fill: #3d4a63; stroke: var(--rb-dark); stroke-width: 5; stroke-dasharray: 3 3; }
.rb-art .rb-hub, .rb-art .rb-hub-big { fill: #fff; }
.rb-art .rb-hub-big { stroke: var(--rb-dark); stroke-width: 5; }
.rb-art .rb-roller { fill: var(--rb-dark); }
.rb-art .rb-track { fill: #3d4a63; stroke: var(--rb-dark); stroke-width: 5; stroke-dasharray: 4 3; }
.rb-art .rb-stop  { fill: #e5484d; }
.rb-art .rb-led   { fill: #22a06b; }
.rb-art .rb-water { fill: var(--rb-water); }
.rb-art .rb-wave  { fill: none; stroke: var(--rb-wave); stroke-width: 2.5; animation: rb-wave 3s ease-in-out infinite; }
.rb-art .rb-wave--soft { opacity: 0.5; animation-delay: 0.5s; }
@keyframes rb-wave { 50% { transform: translateX(-6px); } }

/* The blur: the art is veiled, hovering peeks through a little */
.rb-veil svg { transition: filter 0.4s ease, transform 0.4s ease; transform: scale(1.06); }
.rb-veil--1 svg { filter: blur(5px) saturate(0.9); }
.rb-veil--2 svg { filter: blur(9px) saturate(0.6); }
.rb-veil--3 svg { filter: blur(13px) saturate(0.5); }
.rb-card:hover .rb-veil--1 svg { filter: blur(2px); }
.rb-card:hover .rb-veil--2 svg { filter: blur(6px) saturate(0.8); }
.rb-card:hover .rb-veil--3 svg { filter: blur(10px) saturate(0.7); }
.rb-veil::after { content: "🔒 " attr(data-veil); position: absolute; left: 50%; top: 50%; transform: translate(-50%, -50%);
  white-space: nowrap; font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 0.16em; text-transform: uppercase; padding: 0.45rem 0.8rem; border-radius: 999px;
  background: rgba(255, 255, 255, 0.78); color: #0b3b38; backdrop-filter: blur(4px); box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1); }
html[data-theme="dark"] .rb-veil::after { background: rgba(15, 26, 27, 0.78); color: #cfe9e6; }

/* Card text */
.rb-card__model { font-weight: 600; font-size: 0.9rem; color: var(--pst-color-text-muted); margin: 0; }
.rb-card h3.rb-card__name { font-size: 1.45rem; font-weight: 700; margin: 0.1rem 0 0.6rem; color: var(--pst-color-heading); }
.rb-card__lead { font-size: 0.95rem; line-height: 1.5; color: var(--pst-color-text-muted); margin: 0 0 0.9rem; }
.rb-card ul.rb-specs { list-style: none; padding: 0; margin: 0 0 1rem; font-size: 0.88rem; }
.rb-card ul.rb-specs li { position: relative; padding-left: 0.9rem; margin: 0 0 0.45rem; }
.rb-card ul.rb-specs li::before { content: ""; position: absolute; left: 0; top: 0.55em; width: 5px; height: 5px; border-radius: 50%; background: var(--pst-color-primary); }
.rb-specs-wrap { position: relative; }
.rb-specs--locked { filter: blur(4.5px); user-select: none; pointer-events: none; }
.rb-specs-wrap::after { content: attr(data-lock); position: absolute; inset: 0 0 1rem; margin: auto; width: fit-content; height: fit-content;
  padding: 0.35rem 0.75rem; white-space: nowrap; border-radius: 999px; background: var(--pst-color-background); border: 1px solid var(--pst-color-border);
  font-size: 0.78rem; font-weight: 600; color: var(--pst-color-primary); box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06); }
.rb-card__for { margin: auto 0 0.9rem; padding-top: 0.8rem; border-top: 1px solid var(--pst-color-border); font-size: 0.8rem; color: var(--pst-color-text-muted); }
.rb-card a.rb-card__cta { align-self: flex-start; font-weight: 600; font-size: 0.9rem; padding: 0.45rem 0.9rem; border-radius: 8px;
  background: var(--pst-color-primary); color: var(--pst-color-background) !important; text-decoration: none; transition: filter 0.15s; }
.rb-card a.rb-card__cta:hover { filter: brightness(1.12); }
.rb-card a.rb-card__cta--ghost { background: transparent; color: var(--pst-color-primary) !important; border: 1px solid var(--pst-color-border); }
.rb-card a.rb-card__cta--ghost:hover { border-color: var(--pst-color-primary); filter: none; }

.rb-footnote { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 0.5rem; font-size: 0.85rem; color: var(--pst-color-text-muted); margin: 0.4rem 0 2rem; }
.rb-footnote span { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; }

/* Waitlist checkboxes (the box itself reuses .signup) */
.rb-waitlist__models { display: flex; flex-wrap: wrap; gap: 0.4rem 1.1rem; border: 0; padding: 0; margin: 0 0 0.7rem; flex-basis: 100%; }
.rb-waitlist__models legend { font-size: 0.85rem; color: var(--pst-color-text-muted); margin-bottom: 0.3rem; float: none; width: auto; padding: 0; }
.rb-waitlist__models label { font-size: 0.9rem; display: inline-flex; align-items: center; gap: 0.35rem; cursor: pointer; }
.rb-waitlist__models input { accent-color: var(--pst-color-primary); }

/* Home page teaser strip */
a.rb-strip { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.6rem; padding: 0.9rem; margin: 1.2rem 0 1.6rem;
  border: 1px solid var(--pst-color-border); border-radius: 12px; background: var(--rln-sidebar-bg); color: var(--pst-color-text-base) !important;
  text-decoration: none !important; transition: border-color 0.2s, box-shadow 0.2s; }
a.rb-strip:hover { border-color: var(--pst-color-primary); box-shadow: 0 4px 16px rgba(15, 118, 110, 0.14); }
.rb-strip__head { grid-column: 1 / -1; display: flex; justify-content: space-between; font-weight: 700; }
.rb-strip__head span { font-weight: 600; font-size: 0.9rem; color: var(--pst-color-primary); }
.rb-strip__item { display: flex; flex-direction: column; gap: 0.15rem; padding: 0.6rem 0.7rem; border-radius: 8px; background: var(--pst-color-background); font-weight: 600; font-size: 0.92rem; }
.rb-strip__item b { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; color: var(--rb-accent); font-size: 1.05rem; }
.rb-strip__item em { display: inline-flex; align-items: center; gap: 0.35rem; font-style: normal; font-weight: 500; font-size: 0.75rem; color: var(--pst-color-text-muted); }
.rb-strip__item--now { box-shadow: inset 0 0 0 1.5px var(--pst-color-primary); }
.rb-strip__item--hidden i { font-style: normal; filter: blur(4px); user-select: none; }
@media (max-width: 640px) { a.rb-strip { grid-template-columns: repeat(2, 1fr); } }

/* Announcement bar above the top bar */
.bd-header-announcement { background: var(--rb-dark) !important; color: #fff; font-size: 0.88rem; }
.bd-header-announcement a { color: var(--rb-accent) !important; font-weight: 600; }

@media (prefers-reduced-motion: reduce) { .rb-pulse, .rb-art .rb-scan, .rb-art .rb-wave { animation: none; } .rb-card:hover { transform: none; } }

/* Comments (giscus) under each page */
.rln-comments { margin-top: 2.5rem; padding-top: 1.5rem; border-top: 1px solid var(--pst-color-border); }
.rln-comments__title { font-size: 1.25rem; margin: 0 0 1rem; }